Here's a video produced by SovietFilms about the arrival of the striking miners in Madrid on July 10, the demonstration in support of their demands on July 11 and the police charges against it. The video is in Spanish with English subtitles (press CC for captions).
We have already published an account of the heroes' welcome the miners received in Madrid, and the brutal p0lice charges on July 11. This video gives a very good impression of the mood on those days and contains very revealing interviews with those who participated. It does an excellent job in capturing a turning point in the development of class consciousness in Spain.